VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BR088D Observer: M. Ratner Project type: VLBA Obs filename: br088dcrd.* Date/Day: 2003DEC05/339 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK EB =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Jim Ogle. *NL reports overcast skies, rain. *BR reports snow in dish, freezing rain/snow falling. VCLOCK and gps delta okay. 1624 Begin at SC, HN and EB. 1704 Begin at NL. %NL system not reporting tape VSN number correctly; tape being written to on drive #1 is OVLB0254. 1707 Readbacks at NL okay (only site tested.) 1814 Begin at FD and LA. 1821 Readbacks at FD and LA okay. 1825 Begin at PT. 1832 *PT bad readbacks on track 4, drive #1. 1836 Begin at BR. 1838 Readbacks okay. 1842 Begin at KP. 1849-1906 *NL observing system hung. Nothing works except a SW 100 17 reboot. 1900 Begin at OV. 1906-1909 *NL autostowed during the hang period, had to SW 100 3 repoint. 1915-1938 *NL observing system hung again, antenna autostowed SW 100 23 again too. 1933 *Raining at OV. 2008 Readbacks okay. 2121 KP reports broken high clouds. 2201 Begin at MK. 2245 New operator Cyrus M Reed. 2310 All readbacks OK. 2333 EB finished observing. 0000 Date is 2003DEC06/340. 0011 OV WEA: Reports overcast /w light drizzle. 0100-0500 %OV TSMPLOTS show high system temperature WEA 50 120 spikes during this time period due to rain. 0040 All readbacks OK. 0255 All readbacks OK. 0426 SC readbacks OK. 0431 SC finished observing. 0540 All readbacks OK. 0544 HN finished observing. 0555 All readbacks OK. 0633 New operator: T. Perreault 0653 NL readback check ok 0656-0704 *NL observing system hung. First indication was SW 100 8 that of a loss of communication with the site. Did a traceroute, could see the site VME fine. Opened up screens package at the site, program was still running. However, when I brought up the ACU screen there was no information in the display and the screens package hung. Dialed in and did a reboot via the station sensaphone. 0704 NL observing ends 0722 FD readback check ok 0726 FD observing ends 0739 LA readback check ok 0743 LA observing ends 0746 PT readback check ok 0750 PT observing ends 0758 KP readback check ok 0801 KP observing ends 0830 OV readback check ok 0839 OV observing ends 0909 BR readback check ok 0913 BR observing ends 0941 MK readback check ok 1000 End. Downtime Summary: Total downtime : 171 min Percentage downtime of observing: 1.6% Average downtime per hour : 1.0 min Total scheduled observing time (# Antennas): 10560 min (10) Notes: * = Entries where data was affected. % = Entries where data may have been affected. & = Entries where the site tech was called out. WEA = Weather entries. MF# = Maintenance form or major downtime category associated with a problem. %AD = The percentage of an antenna affected by a problem. AMD = Total antenna-minutes downtime for a problem. Tsys = System Temperature (TP/SP x Tcal/2) ACU = Antenna Control Unit FRM = Focus/Rotation Mount RFI = Radio Frequency Interference VME = Site control computer CB = Circuit Breaker vclock = Program that compares site clock time to a standard.